Peter de mattia and barthold de mattia



P. AND B, DE MATTIA. RUBBE SHOE SOL E MAKING APPARATUS.

APPLICAIION FILED JUNEZO. I9l8.

1,31 1,856. Patented July 29, 1919.

Fig.4

WITNESSES INVENTORS UNITED STATES PATENT OFFICE.

PETER DE AND BABTHOLD DE MATTIA, OF CLIFTON, NEW JERSEY.

nUnBEasnoE-soLE-mmire APPARATUS.

Specification of Letters Patent.

Patented July 29, 1919.

Application filed June 20, 1918. Serial No. 240,998.

in the county of Passaic and State of New' Jersey, have invented a new and Improved Rubber Shoe Sole MakingApparatus, of which the following is a full, clear, and exact description.

Among the principal objects which the present invention has in view are: to increase the effective capacity of a vulcanizing machine; to provide the vulcanized rubber and similar material from which soles of shoes may be made in forms economical in the use of the material; to provide a continuous sheetof material from which shoe soles may be formed, arranged to form the necessary brakes for the shanks of the shoes; to reduce the labor factor in the manufacture of soles such as described, and

to facilitate the vulcanizing of the rubber composition for shoe soles.

Drawings.

Figure 1 is a top plan view of a quarter section of a mold ring employed 1n the manufacture of composition. rings from which the soles are constructed;

Fig. 2 is a cross section of the same;

Fig. 3 is a cross section of the rubber ring formed on said mold;

Fig. 4 is a top view of a quadrant segment of thecomposition ring formed in the mold shown in Fig. 1.

Description.

Shoe soles of the character herein disclosed are constructed from vulcanized rub ber or suitable substitute for the rubber.

When completed they have a thickened portion which extends under the ball of the foot of the wearer and shaped to conform therewhat is known as a break.

with, and a thin portion which extends under the arch of the foot to form what is known as the shank of the sole. An extension of this portion of the sole forms a rest or seat to which a heel of any suitable character is attached. Between the thin and thickened portions of the sole, the surface of the material is inclined to form The break usually extends diagonally across the sole. 'It is owing to the presence of this break and 56 the need of the same extending across the solo at various angles, that the soles are independently molded, the rubber bein shaped and disposed in layers in the mol The packing of these molds in a vulcanizing chamber consumes considerable time, and thereby adds to the cost of construction and to the price of the product.

The difliculties above mentioned are avoided in the present invention by producing a disk ring 9, the body whereof is constructed of approved materials disposed in ring molds 10 to be vulcanized. The molds 10, as seen best in Fig. '2, have each upstanding edges or flanges 11. The flanges 11 have a series of spotting sockets 12. The sockets 12 are adapted to receivebuttons 13 extending from a super-imposed mold. To

expedite the operation of heating the molds, each mold is furnished with a series of heatcirculating' passages 20. These passa es radiate from the central columnformed hy the molds when piled on one another, to the outer space surrounding the same. The passages 20 are disposed in any suitable arrangemcnt and. number.-

When making a ring such as indicated by the numeral 9, the molds are individually piled one on the other to be pressed or otherwise fastened together as a continuous pile.

v By thus disposing the molds in column formation, the vulcanizing chamber is more compactly filled and a comparatively larger number of 'soles are handled. The circle formed by the molds materially aids in the distribution of the heat of the vulcanizing chamber. After the proper heat has been maintainedfor the desired period of time, the molds are removed and when cooled are opened to deliver the disk, rin 9. v

To form the breaks 14 in t 0 disk rings between the sole or thickened ortion 15 and the shank or thin portion 16, t e mold 10 has an inclined section 17, which separates the raised section 18 and the lower section 19 of the said mold. The rings 9 resulting from the method of construction and the operation of the molds, have the breaks 14 approximately centrally located.

As best seen in Fig. 4 of the drawings, the soles may now be cut from the ring 9, the toe or forward portions thereof being adjacent the larger diameter of the ring, while the heel portions are disposed adjacent the inner diameter of the ring. The soles are cut from the ring by employing either cutting dies or anysuitable 'severingtool.

It is obvious that the molds may be varied in correspondence with the product to be formed thereby.

Claims.

1. An apparatus as characterized compris ing a plurality of circular ring molds having inner and outer raised flanges forming the periphery of said molds, and inner and outer sections of difierent thicknesses, and said sections being connected by an inclined section extending from the level of the thicker section to the level of the thinner section, said ring molds being adapted to be assembled to form a vertical pile, the center of said pile forming a cylindrical opening.

2. .An apparatus as characterized comprising a plurality of circular ring molds having inner and outer raised flanges forming the periphery of said molds, and inner and outer sections of diflerent thicknesses, the thicker section being adjacent the inner flange, and said sections being connected by an inclined section extending from the level of the thicker section outwardly to the level of the thinner section, said ring molds being gamete adapted to be assembled to form a vertical pile the center of said pile forming a cylindrical opening, and each of said ring molds having a plurality of heat-circulating passages extending radially -therefrom, said passages communicating with the cylindrical space formed by the assembled ring molds.

3. An apparatus as characterized comprising a plurality of circular ring molds, each having inner and outer raised flanges forming the periphery of said molds, and inner i with the cylindrical space formed by the as sembled ring molds PETER DE MATTIA. BARTHOLD DE MATTIA. 

